Getting ready To Add My Track Side Signals,Before laying balist?

[ac4400fan]

hello,,ive got most of my track layed for the main lines,and im thinking,of adding the track side signals,before adding the ballist ?right or wrong,and need to add the senncers for changing the light for on comming,trains,,i was looking at signalsystems.com looked good ,,

thanks guys any suggetsions[:)]

[retsignalmtr]

i'm going to put working signals on my n scale layout. i have half of the track laid and 3/4 of that is already ballasted. i haven't decided where the signals will be and i wanted to get some scenery done too. so i will retro fit the signals after all the track is laid and the layout is totally running, ballasted and sceniced because i don't want to break any of them while working on the layout. you can do it anytime you want to though.